No problem, we've got 3623 and 6458 to multiply
3623 × 6458 = 6458 × (3623)
+ 6458 × 3 what gives us 19374
+ 6458 × 20 yielding 129160
+ 6458 × 600 producing 3874800
+ 6458 × 3000 that equals 19374000

= 23397334
